Onong Reef
Conditions & tides
Scored by DiveConnect's site-physics model
Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.
Dived here today? How were conditions vs. what we showed?
About this site
Vibrant coral gardens slope into the abyss near Siladen Island, teeming with reef sharks, turtles, and schooling barracuda. Strong currents attract pelagics, while the steep walls showcase colorful soft corals and sponges. Visibility often exceeds 30 meters, making it ideal for drift diving. The site's proximity to deep water brings frequent encounters with larger marine life. Best dived during calm conditions due to occasional surge.
Marine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Anna's ChromodorisChromodoris annaeReported here · unconfirmed
Loch's ChromodorisChromodoris lochiReported here · unconfirmed
Redtooth TriggerfishOdonus nigerReported here · unconfirmed
Alcala's ChromodorisChromodoris alcalaiReported here · unconfirmed
Regal AngelfishPygoplites diacanthusReported here · unconfirmed
Pyramid ButterflyfishHemitaurichthys polylepisReported here · unconfirmed
Blackspotted PufferArothron nigropunctatusReported here · unconfirmed
Willan's ChromodorisChromodoris willaniReported here · unconfirmed
Pacific TrumpetfishAulostomus chinensisReported here · unconfirmed
Spotted BoxfishOstracion meleagrisReported here · unconfirmed
Green Sea TurtleChelonia mydasObserved near here · iNaturalist
Durable tips from divers — access, hazards, marine life, facilities. For day-of conditions, use the report tool in the conditions card above.
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